British Formula One racing driver Lewis Hamilton and his Mercedes teammate Nico Rosberg are competing like 'enemies' rather than partners for the world title, said Mercedes boss Toto Wolff.
Wolff said that the drivers' desire for F1 glory has exposed the limit of the relationship that Rosberg and Hamilton have shared since their teens.
Meanwhile the duo prepared for Sunday's Singapore Grand Prix night race, the next chapter of their increasingly tense title fight.
According to the Mirror, Rosberg's lead has been cut to 22 points by Hamilton's controversial victory at the last round in Monza.
Wolff also said that this was a new experience for the two and that they would learn a lot from the ongoing competition.
